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Conditional Rate-Distortion-Perception Trade-Off

Authors :
Niu, Xueyan
Gündüz, Deniz
Bai, Bo
Han, Wei
Publication Year :
2023

Abstract

Recent advances in machine learning-aided lossy compression are incorporating perceptual fidelity into the rate-distortion theory. In this paper, we study the rate-distortion-perception trade-off when the perceptual quality is measured by the total variation distance between the empirical and product distributions of the discrete memoryless source and its reconstruction. We consider the general setting, where two types of resources are available at both the encoder and decoder: a common side information sequence, correlated with the source sequence, and common randomness. We consider both the strong perceptual constraint and the weaker empirical perceptual constraint. The required communication rate for achieving the distortion and empirical perceptual constraint is the minimum conditional mutual information, and similar result holds for strong perceptual constraint when sufficient common randomness is provided and the output along with the side information is constraint to an independent and identically distributed sequence.

Details

Database :
arXiv
Publication Type :
Report
Accession number :
edsarx.2305.09318
Document Type :
Working Paper